Buffing-machine.



No. 690,549. Patented Ian. 7, I902. m. H. BALLARD.

BUFFING MACHINE.

. (Application fllad'il'uly 1Q, 1901.)

v (No Model.)

Mi in 6.55 es ag ukm.

U ITED STATES PATENT OFFICE.

MILTON H. BALLARD, OF LYNN, MASSACHUSETTS, ASSIGNOR TO GEORGE W. EMERSONAND COMPANY,

OF LYNN, MASSACHUSETTS.

BUFFING-IMACHINE.

SPECIFICATION forming part of Letters Patent N 0. 690,549, dated January7, 1902.

Application filed July 16,1901.

To all whom it may concern.-

Be it known that I, MILTON H. BALLARD, of Lynn, in the county of Essexand State of Massachusetts, have invented an Improvement inBuffing-Machines, of which the following description, in connection withthe accompanying drawings, is a specification, like characters on thedrawings representing like parts.

This invention relates to buffing-machines of that type havingarotatable longitudinally reciprocating shaft bearing one or morebuffing-rolls, and has for its object to improve and simplify theconstruction of the mechanism employed for reciprocating the rotatableshaft.

Figure 1 shows in front elevation a buffingmachine embodying thisinvention. Figs. 2 and 3 are details to be referred to.

a represents the shaft, herein shown as bearing two buffingrolls b b.This shaft is mounted in boxes 0, supported by the main framework, andis free to rotate and also slide longitudinally in said boxes.

To the shaft or a belt-pulley d is secured, over which a belt passes,which passes around a belt-pulley b on the main driving-shaft e. Asleeve or collar f is loosely mounted on said shaft a, which is held ina predetermined position thereon by any suitable means-as, for instance,it may be disposed between the belt-pulley d and a fixed collar f, sothat the shaft a may turn freely within said'sleeve, yet said sleevewill move longitudinally with the shaft. The sleeve or collar f hasoneach side of it two projections or cars f disposed to provide a spacebetween them, and between the ears of each pair the upper extremities ofthe arms of a yoke g are disposed, said yoke being pivoted .at g to abracket on the frame and forming one arm of a bellcrank lever, and theother arm g of said bell= crank lever is connected by an eccentric-rod gwith the strap or ring 9 of an eccentric 6 secured to a shaft 9 to whicha belt-pulley g is secured, over which a belt 9 passes, which in turnpasses around a belt-pulley g on the main drivingshaft. The adjacentsides or faces of the ears or lugs f are formed parallel, as shown inFig. 1, and the upper ends of the arms of the yoke g are made Serial No.68,520. (No made.)

widest at a point substantially midway the upper and lower ends of theears, as at 2, Fig. 2, being gradually reduced in width above and belowsuch point, so that the ends of said fitting a threaded socket in theend of the arm and held therein by a set-screw g, and the upper end ofthe eccentric-rod g has loosely connected to it a block 9 which isloosely fitted onto said shouldered screw and held in position thereonby a nut g.

I claim--- 1; In a buffing-machine, the combination of a rotatablelongitudinally-moi procatin g shaft bearing one or more buffing-rolls,of means for rotating said shaft, and means for reciprocating itlongitudinally consisting of a pivoted bell-crank lever, one arm ofwhich engages a sleeve on the shaft, and the other arm of which isconnected by an eccentricrod with the strap or ring of an eccentric, ashaft bearing said eccentric, disposed in parallelism with the maindriving-shaft, a beltpulley on said shaft and belt passing over saidbelt-pulley and over a belt-pulley on said maindriving-shaft,jsubstantially as dethe shaft having a pair of cars ateach side, a pivoted bell-crank lever, one of the arms of which is madeas a yoke which works between said ears, the extremities of said armsbeing formed widest at points substantially midway the upper and lowerends of the ears and reduced in width above and below said widestportion, an eccentric-rod connecting said bell-crank lever with a strapor ring on an eccentric, a shaft bearing said eccentric I bearing saideccentric, and means for rotatand means for rotating said shaft,substaning said shaft, and means for varying the tially as described. 1stroke of said bell-crank lever to compensate 15 3. Inabnffing-machine,the combinationof for wear, substantially as described.

5 arotatable longitufinally-reciprocating shaft In testimony whereof Ihave signed my bearing one or more buffing-rolls, of means name to thisspecification in the presence of for rotating said shaft, and means forreciptwo subscribing witnesses. rocating it lon itndinall 1 consistin ofa ivoted bell-cranl? lever, ode arm of \Tvhich en- MILTON LALLARD' IOgages a sleeve on the shaft, and the other arm Witnesses:

of which is connected by an eccentric-rod B. J. NoYEs, with the strap orring of an eccentric, a shaft JOHN W. DECROW.

